Transparent background not working

Kedric · Post by **Kedric** » Wed Apr 13, 2011 4:43 pm

I have really been struggling with exporting a video with a transparent background.

I found in this message board from previous posts that I can export into a video format with million colors + and the background will be transparent. That is, if I leave the default whitish gray background. I am not sure if this is true. I keep exporting videos in multiple formats and when I open it it has whitish gray background - not transparent. Am I doing something wrong?

I have also tried chroma key with a blue background but the video is not sharp enough to do the chroma key properly and I get chroma key spill.

I am trying to create an overlay to give to somebody for their online videos.

If it helps to see the file it can be found here:
http://dl.dropbox.com/u/23092328/Subscr ... orite.anme

jonbo · Post by **jonbo** » Wed Apr 13, 2011 5:14 pm

That's pretty cool animation.You are right. You leave the default background. Export as a quicktime mov/png/millions of colors+. You can play with the quality slider to get the best mix of render and file size. I just rendered your scene this way and it came out right. Of course I dropped the blue background first.

Kedric · Post by **Kedric** » Wed Apr 13, 2011 5:33 pm

Okay, I just exported as a quicktime mov/png/millions of colors+ and it still did not work. I have a grey background.

Any idea what I am doing wrong?

Post by **Víctor Paredes** » Wed Apr 13, 2011 5:37 pm

Kedric wrote:Okay, I just exported as a quicktime mov/png/millions of colors+ and it still did not work. I have a grey background.

Any idea what I am doing wrong?

When you open the video in quicktime you always see the background. The alpha is showed when you are on a video edition software like premiere or final cut.
Check this, open AS, draw a couple circles or whatever and then import your rendered video, you'll see there is no background on it.

jonbo · Post by **jonbo** » Wed Apr 13, 2011 5:41 pm

don't check the do not multiply alpha channel box as the + in millions of colors+ means alpha.

Kedric · Post by **Kedric** » Wed Apr 13, 2011 5:43 pm

selgin,

Thank you so much! I actually am using a video editing program (PowerDirector). I read what you said about opening the file in anime studio. You were right. It is working . . . the problem is my editing software.

I appreciate everybody for helping me.